CM93 Versions

[Tupaia]

Originally Posted by Neddy

I sail Papua New Guinea every year. older CM)# was out 1/10 mile every where-

If they are consistently out by this much then you can set an offset within OCPN.

Yacht Valhalla has a PDF explaining how to do this.

http://yachtvalhalla.net/navigation/navigation.htm

It would be good if you posted the results somewhere for other cruisers.

[bcn]

Originally Posted by Neddy

I sail Papua New Guinea every year. older CM)# was out 1/10 mile every where-
picked up CM93-3 last year, they are 2016 updated, they say, and they are now correct where I sail.
Too bad you cant use them OpenCPN, but have to use Maxsea 10.3 or dKartNavigator: that come with the charst. all up 2.5GB so should have lots more charts than last ver that had 1.6 GB

Papua NG is included in the Australian oeSENC set. Pardon: we have to call oeSENC "oeEVC" in Australia....
No excuse not to use OpenCPN anymore

[boatman61]

CM93 are the charts used in my Nimble Navigator program..
Mike has an update program one can access via password and to date in my travels since I bought the program in 2012 they have proved accurate for me, including the S Pacific.. cannot speak for the atolls as I did not enter any.
So I guess I fall under DH's description of a dangerous unseamanlike sailor..
Woe is me..

[bcn]

CM93/3 or CM93/2?
CM93/3 is the actual (encrypted) C-MAP (now owned by Navico) format and receives updates. The successor of CM93/2.

[boatman61]

Not a clue... I leave the details to Mike however the last update I downloaded was for the Caribe.. Luddite..
Will have to fire up the laptop today and check for updates before I fly out for my next job tomorrow.

[Albinvega27]

Originally Posted by Paul L

I used CMap 2018 charts in the South Pacific. They were very good. I also have 3 versions of the CM93 charts freebies. It isn't clear to me that one is any more up-to-date than the other. The differences seem to be some minor chart revisions in some areas. The CM93 charts were decent in many areas, but not good in Fiji and Tuamotus.

Minor differences are like:
-Galapgos Islands had a submarine volcano going of and the harbour of some Island varied completely. In consequence of using the regular "old" charts, one tourist boat ran agorund and sunk. These are the kind of variations, they correct. The old ones are useful, but you should be aware of areas in the world, where Marine volcano activities have been going on. The Pacific is pretty much unstable, so frequent upgrade does good...

[sv_pelagia]

2012 seems latest "free" (pirated) CM93). Large differences from previous years

http://sailing-pelagia.blogspot.com/...ronic.html?m=0

[Neddy]

Originally Posted by bcn

CM93/3 or CM93/2?
CM93/3 is the actual (encrypted) C-MAP (now owned by Navico) format and receives updates. The successor of CM93/2.

Any of you had a chance to use cm93/3 on Open Cpn yet.
Been told it's a dll file that's missing, butv5hen again 8m not and expert

[bcn]

There is no plug-in for CM93/3 for OPCN.


Future availability depends on Navico. We had talks last year but 2020 has not been productive to explore this way.


Hubert

[Neddy]

Thank you
Is the plug in on OpenCPN.org?

[bcn]

There is no plug-in for actual Navico C-Map charts. Another different island today.

[Neddy]

I use Tell chart program from Norway, simple but usefull

[bcn]

Link? What is this please? How related to OpenCPN?

[Neddy]

Related to CM93/3
Just a note

[bcn]

Don't get your message.
What is "Tell from Norway"?
Google or Bing does not give any result..